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,,,,,£,,,,                   rails                  ,£££,,,,,,
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,,,,,,,,£, ££££££££££££££££££££££££££££££££££££££££ £,,£,££,,,
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,,,,,,,,,, ££££££££££££££££££££££££££££££££££££££££ ,,£,,£,££,
,,,,,,,,,,                                          ,,,£,,,£££
£,,,,,,,,,                                          ,,,,£,,£,£
££,,,,,,,, trains  are  so  constructed  that  they ,,,,,£,,,£
,££,,,,,,, have  to follow a set path. this path is ,,,,,,£,,£
,£££,,,,,, called a  "railway", which  is comprised ,,,,,,,£,,
,£,££,,,,, of two metal  rails, hence its nickname. ,,,,,,,,£,
,,,£££,,,,                                          ,,,,,,,,,£
£,,£,££,,, because the  low  friction  between  the ,,,,,,,,,,
,£,,,£££,, wheels of the train and the  rail metal, £,,,,,,,,,
,,£,,£,££, there are limits for  how acute a  curve ££,,,,,,,,
,,,£,,,£££ can be, and  even  more so for how  much £££,,,,,,,
,,,,£,,£,£ the  ground  under  the  rails   can  be £,££,,,,,,
,,,,,£,,,£ sloped. thus  a railway is often not led ,,£££,,,,,
,,,,,,£,,£ on top of  hills, rather through them in ,,£,££,,,,
,,,,,,,£,, tunnels   (if  they   are   large),   or ,,,,£££,,,
,,,,,,,,£,            artificial chasms.            ,,,,£,££,,
,,,,,,,,,£                                          ,,,,,,£££,
,,,,,,,,,, there will be trees on the side  of  the ,,,,,,£,££
£,,,,,,,,, rails, but not too close,  or they  will ,,,,,,,,££
££,,,,,,,, be  cut  down by the  railway  janitors. £,,,,,,,£,
£££,,,,,,, there  will  be  plains,  and  bodies of ,£,,,,,,,,
£,££,,,,,,                  water.                  ,,£,,,,,,,
,,£££,,,,,                                          £,,£,,,,,,
,,£,££,,,, trains go  by  day and by  night.  along ,£,,£,,,,,
,,,,£££,,,       the way, there is information      ,,£,,£,,,,
,,,,£,££,, scattered,  often put on  top  of poles, ,,,£,,£,,,
,,,,,,£££, to be interpreted  by the train drivers. ,,,,£,,£,,
,,,,,,£,££ different  parts  of  the  railway  have ,,,,,£,,£,
,,,,,,,,££          different speed limits.         ,,,,,,£,,£
£,,,,,,,£,                                          £,,,,,,£,,
,£,,,,,,,, sometimes, trains have to stop  and wait ££,,,,,,£,
,,£,,,,,,, for something to happen, far away.  this £££,,,,,,£
£,,£,,,,,, is signaled  by  red  or  green  lights. £,££,,,,,,
,£,,£,,,,,                                          ,,£££,,,,,
,,£,,£,,,,                 ££££££££                 ,,£,££,,,,
,,,£,,£,,,                                          ,,,,£££,,,
,,,,£,,£,, many people follow the  rails  by  foot. ,,,,£,££,,
,,,,,£,,£, often  this proves  to  be  the  shorter ,,,,,,£££,
,,,,,,£,,£ path between two  points.  however  this ,,,,,,£,££
£,,,,,,£,, is  frowned   upon,  and  very  impolite ,,,,,,,,££
££,,,,,,£,        toward the train drivers!         ,,,,,,,,£,
£££,,,,,,£                                          £,,,,,,,,,
£,££,,,,,,                                          ,£,,,,,,,,
,,£££,,,,,                                          ,,£,,,,,,,
,,£,££,,,,                                          ,,,£,,,,,,
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,,,,£,££,,                                          ,,,,,£,,,,